Valve mechanism for hot-water pumps.



0. GAILLE. VALVE MECHANISM FOR HOT WATER PUMPS.

APPLIOATION FILED MAB. 9, 1909.

. Patented Aug". 10,1909.

2 BHEETB-SHEET 1.

ANDREW. a. mm; on mcmunmmum. WAsHlNmu. no.

0. 'GAILLE.

VALVE mncmmsm FOR HOT WATER PUMPS. v APPLICATION VIILED KAR- 9, 1909. II 930,646, 4 Patented Aug. 10; 1909.

2 SHEETS-BHBET 2.

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ANDREW. u. GRAHAM omv vlmfo-vmoaw ik Asnmm'ou. u. c.

nnrrin SA CHARLES oAILLE, or LE PERREUX, FRANCE.

VALVE MECHANISM FOR HOT-WATER PUMPS.

Specification of Letters E'atent.

Patented Au 10, 1909.

Application filed March 9, 1909. Serial No. esazeo.

To all whom it may concern:

Be it known that 1, Cinemas OAILLE, of the Republic of France, residingat No. 24 Rue de la Gaite, Le Perreux, Seine, France, have invented newand useful Improvements in Valve Mechanism for Hot-Water Pumps, of whichthe following is a specification.

The present invention has for its object an apparatus adapted to be usedin connection with single or double-acting pumps to insure their properoperation with water at a high temperature or at a temperature whichapproximates to that of vaporization.

Two practical methods of carrying out the invention are shown as.representative examEples in the annexed drawings.

i re 1 is a longitudinal section of a doub e acting horizontal pumpfurnished with the invention, and :Fig. 2 is a section of adouble-acting vertical pump.

The chamber a receives the liquid provided from a reservoir, not shown,situated at a height above the body of the pump. On the suction stroke,the entering liquid raises the valves 1) and c, which are sim lenon-return valves, whose lift is limited y the abutments d and e, andwhich close by their own weight on the delivery stroke. The workingchamber, formed in the body of the pump, comprises the cylinder f inwhich works the piston g, and the two compartments h and t' separated bya partition is. These compartments are separated by a plate m from thepressure-chamber n, and

y two spring-loaded valves 0 and p constituting the delivery-valveswhich open and close alternately according to the direction of motion ofthe piston. At the upper part of each of these compartments 5 and h issituated the contrivance which forms the subject of the presentinvention. To a junction-pipe g leading from each of these chambers hand 'L is attached a contrivance comprising a passage divided into threecompartments (1, 2, 3.) The upper compartment (3) communicates with theatmosphere for example, by means of holes (4) bored in the plug (5).This is in connection with the intermediate compartment (2) past anequilibrium float valve (6) closing inwardly.

The socket t connecting the compartments (2) and (1) provides an upperseating 'v for a float-valve s, of which the lower seating 1' isprovided by a disk w formed with orifices, and secured between one edgeof the tubular junction g and the socket t. The float-valve s isprovided on its exterior surface with longitudinal channels a and it ispierced with a capillary passage o. The seating '22 is situated at alevel slightly above that of the delivery valves 0 and p.

The water coming from the reservoir fills the compartments i and h. Theupper portions of these compartments communicate, by means of thejunction q, with the channel a and the capillary passage 'u of thefloatvalve 8 and thus witnthe compartment (2) which itself communicateswith the atmosphere so long as the valve (6) is open. The

steam formed is liberated by the channels uand the passage U, and forthe greater part is condensed on the walls of the compartment (2) whichcan be cooled from without. The air and gases, in short all the volatileconstituents not condensed, eventually find an outlet by means of thecompartment (3) and the bore-holes (4). The com artments t and h arethus exclusively fillec with hot water, and the float-valve s, actuatedby the liquid which raises it, provides a constricted communication withthe compartments (2) and (3), when in contact with its upper seating y,after the complete expulsion of the vapor and air. Communication of thepump with the compartments (2) and (3) and the atmosphere is then nolonger possible except by the capillary passage 12. On thedeliverystroke the corresponding valve p or 0 opens.

During the whole of the delivery-stroke, the

float-valve s presses against its upper seating y: it falls under itsown weight to its lower seat as soon as'the pressure of the pistonceases to be exerted. The small quantity of steam which may haveremained in the body of the pump is driven out through the capil larypassage 12. It is true that a small quantity of water may be conveyed inthis dolivery stroke: but the compartment (2) is so dimensioned thatthis water never fills it, and is consequently completely recoveredduring the following suction-stroke. When this new suction-stroke takesplace, if the steam has been entirely expelled from the body of the pumsuction occurs which closes the valve (6 in consequence of the partialvacuum produced, the corresponding valve 0 or 1) opens under a pressuregreater than that of the source of supply. The chamber is thus filledmore ra idly. The valve (6) (which is closed after the com lete removalof the un-condensed steam, an the condensation of the greater part ofthe steam the upper suction chamber h.

below this valve) has the effect, on closing, of causing the pump toactas if unprovided with any contrivance for communicating with theatmosphere, and produces in the com artment (2) a partial vacuumfacilitating t e approach of the water on the suctionstroke.

Fig. 2 shows the invention a vertical double-acting pum ne of thetubular junctions g (on whici is mounted a three compartment contrivance(1, 2, 3,) similar in every respect to that in the preceding example)communicates directly with The other tubular junction q, that on theright, communicates with the lower chamber 2' by grooves 2 located inthe liner of the body of the pump, opening with orifices 10.

Instead of making the compartment (3) of the three com artment deviceopen directly to the atmosp ere it may be connected by a pipe, to thecold water supply, the whole of the escape steam then returning to thesupply; V

I claim:

1. For use in pumps for pumping liquids, the temperature of whichapproximates to that of vaporization, a eontrivance for proplied to amoting the complete filling of the pumpchamber with liquid during thesuctionstroke, comprising a passage leading upward from the up erportion of the pumprhamher, two va ves in said passage, the outer valveopening outward and closing inward and the inner valve being afloat-valve which by the buoyancy of the liquid closes outwardly withthe exception of an orifice of fine bore, there being, between the twovalves, a space sufiicient to temporarily con tain the small quantity ofliquid which, in the delivery stroke, may be forced through the orificeof fine bore.

2. In combination with a hot water pump,

a pipe in communication with the said pump, a float valve having a smallaperture therein in said pipe, and a second valve at the free end ofsaid pipe located a distance from the float valve.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

Louis GARDET, HENRI MoNrN.

